.site_header__promo {
    width: 390px;
    background: url('https://ss.uooio.keenetic.pro/static/uo-tashtagol.kemobl.ru/img/23febr_2.jpeg') #ffffff4f no-repeat;
    background-size: 74%;
    background-position: left;
}

.site_header {
    background-size: 25%;
    background-position-x: 102%;
}